Ex girlfriend acts as if I don't exist.

Anonymous
Long story short I dated this girl for 2 months, I was her first boyfriend and she dumped me for being too clingy. I took the break-up well at first but a few days later asked if I can see her and practically begged for her to take me back and that I would change. She said it couldn't happen and I went on vacation for a few weeks with my family . I felt like a bit of a nob for begging so I apologized to her and we agreed on being friends as I was the nicest and sweetest guy she had ever met.

It took a few weeks to kick but I was feeling very hurt/angry and I deleted her off Facebook as I was sick of talking to her on chat and getting short answers, I realized that we wouldn't be the same as we were prior to dating. After a few weeks she realized I deleted her as I was feeling guilty and tried to re-add her, she got really angry apparently. At a party a few months after the breakup, I got drunk and started ranting to my friends about how I just wanted to get over her and forget about everything, apparently she got upset.

I felt terrible for how I acted so I sent her a message apologising for everything I did and she thanked me and said that it wasn't my fault that we broke up. It's been 6 months since then and when we catch up in a group, we will sometimes talk, but not directly.

The thing is around college she acts as if I don't exist and kind of makes an effort to avoid me. Such as the other day I was standing with 2 of our close mutual friends, there is no way she could have not seen us but my ex walked past and just completely ignored us, one of her friends reached out to her to say hello, my ex just turned around and said hi and then turned her back on us just as quickly and walked off - she didn't even look in my direction.

I don't understand why she does this. I mean I regretfully upset her maybe, but towards the end of our relationship when we had issues, me being a sensitive guy would ask what's going on, we would argue, I would get kind of upset and when things settled down I apologized if I upset her, but she always said she never got upset, just pissed off.
Ex girlfriend acts as if I don't exist.
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